EP2103743A1 - Gründung einer Windturbine - Google Patents
Gründung einer Windturbine Download PDFInfo
- Publication number
- EP2103743A1 EP2103743A1 EP09003736A EP09003736A EP2103743A1 EP 2103743 A1 EP2103743 A1 EP 2103743A1 EP 09003736 A EP09003736 A EP 09003736A EP 09003736 A EP09003736 A EP 09003736A EP 2103743 A1 EP2103743 A1 EP 2103743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wind turbine
- foundation
- cone
- accordance
- turbine foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009415 formwork Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 18
- 238000009412 basement excavation Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010616 electrical installation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000036967 uncompetitive effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
Definitions
- This invention relates in general terms to a wind turbine foundation in the shape of a cone, and more particularly a foundation which comprises a central body in the shape of a truncated cone over which is found an upper flange or a pedestal for connecting with the tower and a lower slab in the shape of a flat ring.
- the power generated in a wind turbine is proportional to the size of the rotor. Therefore, to generate more power, the size of the blades is increased, and as a consequence there is an increase in the size of the power train, of the turbine and the height of the tower. It follows that there must also be an increase in dimensions of the foundation upon which the wind turbine is supported, up to the point where a reduction in the material used in the foundation leads to a considerable reduction in the cost of the wind turbine unit. To this end the above technique offers a number of foundation options to meet ever more challenging requirements and in turn reduce the material used and/or facilitate installation:
- the aim of this invention is to provide a wind turbine foundation with a central body in the shape of a truncated cone which is formed in concrete oven the earth of the terrain, and which has a lower slab in the shape of a plane ring.
- Another aim of an alternative embodiment of this invention is to have a wind turbine foundation with a central body in the shape of a truncated cone whose interior houses the electrical installations of the wind turbine or other components of the latter, and which has a lower slab in the shape of a plane ring.
- an alternative embodiment of this invention is a wind turbine foundation with a central body in the shape of a truncated cone which has a lower slab in the shape of a plane ring which sits directly on the surface of a terrain with great load-bearing capacity, without needing to bury the central body, in whose interior there can also be housed a series of wind turbine components.
- One of the advantages of the preferred embodiment of this invention is the optimisation of the total foundation cost for wind turbines rated at 2MW and above in comparison with the state of the art, due principally to the saving in materials (concrete, reinforcing steel) relative to conventional foundation designs; the reduction in the volume of excavation, which reduces the cost of excavation in addition to achieving a significant reduction in cost of transport to the waste dump (economical and environmentally friendly solution); and the reduction and simplification of the formwork since the local earth itself is used, rather than evacuated from the central body, as permanent formwork during the forming in situ of the foundation concrete.
- the following table sets out an estimate of the progression of the total cost and cost / kW of the hollow cone foundation for various power ranges. It illustrates a clear reduction in the cost of foundation with the wind turbines of the order of 2-10MW compared with the conventional alternatives mentioned above: Power (MW) Total Cost ( €) Cost ( €/KW) 0.86 32,693 38.5 2 60,431 30.2 4 131,342 32.8 6 171,137 28.5 8 268,544 33.6 10 457,214 45.7
- Another advantage of this invention is the increase in stability due to the inertia provided by the diameter of the base of the cone, compared with the corresponding stability provided by state of the art foundations having the same mass. Further it improves the capacity to absorb wind turbine loads since the flow of stresses is dispersed throughout the length of the walls of the cone as they travel downwards through the foundation in a smooth and uniform manner, independently of the orientation of the nacelle and the directions of the above-mentioned loads: As the nacelle changes its orientation to match the direction of the wind in order to optimise the production of energy, the direction of the forces changes with the rotation of the nacelle.
- Another advantage of this invention is the greater structural efficiency at 80000KNm and above at the base of the tower. That is a better relationship between the diameter, the material and the geometry or the structurall configuration, in comparison with the state of the art as currently published.
- Another advantage of an alternative embodiment is the saving in the excavation itself for those terrains whose capacity for support and properties are such that it is not necessary to bury the conical foundation considered in this invention so that it can be used as a base for the tower without the need for additional foundation.
- Both this solution and the alternative embodiment, where the foundation is buried evacuating the earth from the interior of the cone, enable the foundation to be implemented in a modular fashion with prefabricated pieces which facilitate transport and assembly. Once installed, the above-mentioned space can be used to house the wind turbine's electrical installations or other components thereby optimising the interior space in the tower and nacelle.
- the conical foundation is based on a conical shape with a lower slab (2) which receives the stresses from the walls of the cone (1) and transmits them to the ground.
- a pedestal which is not shown can be used to connect the foundation to the tower, at the upper part of the cone, or a concentric ring in the form of a flange to allow access to the hollow interior of the foundation in the case of other embodiments.
- inertia is supplied by the radius of the cone at its base, and the transfer of stresses from the lower part of the tower to the supporting ground can be achieved smoothly, on being transmitted by the conical surface.
- the main new feature and advance under the preferred embodiment of this invention lies within the design of a conical foundation which takes advantage moreover of the earth which is not extracted for use as permanent formwork while the concrete is poured in situ. This fact allows the design of the foundation to be optimised, reducing the quantity of material used and lowering the cost of foundations, in addition to the advantages referred to in the preceding section.
- the foundation is made up of a plane ring (2) for the base and a truncated cone shaped body in the central part (1) which is formed in concrete on the unexcavated terrain.
- the cross section of the plane ring (2) is preferably rectangular, but additionally the upper and/or lower side could have a slight slope between 0 and 45° relative to the horizontal.
- the dimensions of the above-mentioned ring can have, depending on the load and dimensions of the wind turbine, a radius (R) of up to 18m, a thickness (L) of up to 6m, and a height (c) of up to 1m.
- the lower ring (2) is joined to the central conical body (1) in the interior area of the ring (2) so as not to leave a projection into the interior, with the aim of facilitating excavation work, formwork and the pouring of concrete.
- the section of the conical body (1) of the preferred embodiment is produced via a generatrix in the form of a rhomboid with the two short sides parallel to the horizontal at its upper and lower extremes and the two long sides parallel at an inclination falling preferably between 20 and 60° with respect to the horizontal.
- the thickness (e) defined by the distance between the above-mentioned long sides of the generatrix is preferably constant and depending on requirements reaches values up to 1.4m.
- the thickness of the cone can increase (1) as we approach the lower ring (2).
- additionally the above-mentioned long sides of the generatrix are formed from complex curves with a large radius of curvature, which produces a foundation in the shape of a cone with pseudo-spherical walls.
- the total height of the foundation (H) reaches values up to 6m
- the diameter (Dp) of the upper mouth of the central body reaches dimensions up to 15m in diameter depending on the diameter of the tower and the load from the wind turbine.
- the dimensions of the foundation will vary depending on the load bearing capacity of the earth and also on the load from the wind turbine. However, by way of example, for a wind turbine of the order of 2 to 4MW the ranges of the principal dimensions are:
- the conical foundation design is intended to be executed in situ with conventional concrete having characteristic strength between 25 and 35MPa.
- this design can be carried out using high-strength concrete, special concrete, fibre reinforced concrete.
- Another alternative is provided by prefabricated concrete components with different qualities of concrete for the different components (conical surface, lower slab, etc.).
- the excavation must be carried out taking account of the final volume of the conical foundation. Once the excavation is carried out, a layer of mud slab is placed on the ground, and upon that the previously pre-mounted reinforcements, for subsequent pouring of concrete. Depending on the slope of the conical surface, it may be necessary to use formwork.
- the concrete pouring for the conical surface (1) requires the use of interior formwork, which must be suitably underpinned and held together, either that or make use of prefabricated components for ease of transport and assembly as described above.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
- Foundations (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200800777A ES2347742A1 (es) | 2008-03-18 | 2008-03-18 | Cimentacion de aerogenerador. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2103743A1 true EP2103743A1 (de) | 2009-09-23 |
Family
ID=40473929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09003736A Withdrawn EP2103743A1 (de) | 2008-03-18 | 2009-03-16 | Gründung einer Windturbine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090255200A1 (de) |
EP (1) | EP2103743A1 (de) |
CN (1) | CN101539096A (de) |
ES (1) | ES2347742A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109543287A (zh) * | 2018-11-20 | 2019-03-29 | 深能南京能源控股有限公司 | 基于遗传算法的风电机组基础尺寸优化方法 |
WO2019191788A1 (en) * | 2018-03-26 | 2019-10-03 | Viet Hung Nguyen | A foundation of a wind turbine tower |
WO2024032921A1 (de) | 2022-08-11 | 2024-02-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Windkraftanlage sowie verfahren zum errichten einer windkraftanlage |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10145414B4 (de) * | 2001-09-14 | 2013-09-12 | Aloys Wobben | Verfahren zur Errichtung einer Windenergieanlage, Windenergieanlage |
WO2004067959A1 (de) * | 2003-02-01 | 2004-08-12 | Aloys Wobben | Verfahren zur errichtung einer windenergieanlage sowie windenergieanlage |
US20100024311A1 (en) * | 2008-07-30 | 2010-02-04 | Dustin Jon Wambeke | Wind turbine assembly with tower mount |
EP2375057B1 (de) * | 2010-03-31 | 2016-05-04 | Siemens Aktiengesellschaft | Windturbinenanlage |
DE102010047773B4 (de) * | 2010-10-08 | 2012-08-09 | Timber Tower Gmbh | Fundament für eine Windkraftanlage |
CN102409697A (zh) * | 2011-09-15 | 2012-04-11 | 江苏九鼎环球建设科技集团有限公司 | 预制装配式塔桅结构基础 |
PT2886723T (pt) | 2012-06-06 | 2017-06-08 | Gestamp Hybrid Towers S L | Fundação nervurada para superestruturas e método para produção da fundação |
CN109372006B (zh) * | 2018-11-27 | 2023-11-10 | 中国电建集团华东勘测设计研究院有限公司 | 海上风机基础防冲刷保护结构及其施工方法 |
ES2701605A1 (es) | 2018-12-03 | 2019-02-25 | Hws Concrete Towers S L | Cimentacion para torres eolicas |
ES1293394Y (es) * | 2022-03-30 | 2022-10-21 | Ms Techno Rditech Sl | Sistema de cimentacion laminar de hormigon para torres eolicas |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665915A1 (fr) * | 1990-08-16 | 1992-02-21 | Petroles Cie Techniques | Procede d'ancrage dans le sol d'une structure metallique et base d'ancarge d'une structure metallique ainsi mise en place. |
CA2168480A1 (en) * | 1996-01-31 | 1997-08-01 | M. T. Croghan | Concrete post base mold |
US5800727A (en) * | 1995-12-07 | 1998-09-01 | Croghan; Morris T. | Base mold for concrete post |
EP1074663A1 (de) | 1999-08-06 | 2001-02-07 | Carl Bro as | Fundament für Gebäude, insbesondere Fundament für einen Turm, Windenergieanlage oder dergleichen |
DK200100030U3 (da) | 2001-01-31 | 2001-03-23 | Peter Thisted | Stjernefundament med elementer til fundering af tårne |
US6672023B2 (en) | 2000-09-27 | 2004-01-06 | Allan P. Henderson | Perimeter weighted foundation for wind turbines and the like |
WO2004053238A1 (en) * | 2002-12-11 | 2004-06-24 | Bigfoot Systems Inc. | Footing form |
WO2004101898A2 (de) | 2003-05-13 | 2004-11-25 | Aloys Wobben | Fundament für eine windenergieanlage |
NL1024581C2 (nl) | 2003-10-21 | 2005-04-22 | Gmb Beton En Ind Noord West B | Windmolenfundatie. |
DE102006002780A1 (de) * | 2006-01-20 | 2007-07-26 | Tiefbau-Gmbh "Unterweser" | Verfahren zum Herstellen eines Wasserbauwerks |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4432800A1 (de) * | 1994-08-31 | 1996-03-07 | Hochtief Ag Hoch Tiefbauten | Windkraftanlage |
CN2379522Y (zh) * | 1999-05-25 | 2000-05-24 | 赵正义 | 组合式塔机基础砼预制构件防位移联接装置 |
RU2226620C2 (ru) * | 2002-05-27 | 2004-04-10 | Бирюлин Игорь Борисович | Ветровой теплоэлектрический генератор |
JP4645300B2 (ja) * | 2005-05-19 | 2011-03-09 | 鹿島建設株式会社 | 洋上風力発電装置の重力式基礎 |
US8051627B2 (en) * | 2006-04-30 | 2011-11-08 | General Electric Company | Tower adapter, method of producing a tower foundation and tower foundation |
-
2008
- 2008-03-18 ES ES200800777A patent/ES2347742A1/es active Pending
-
2009
- 2009-03-05 US US12/398,251 patent/US20090255200A1/en not_active Abandoned
- 2009-03-16 EP EP09003736A patent/EP2103743A1/de not_active Withdrawn
- 2009-03-18 CN CN200910129302A patent/CN101539096A/zh active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665915A1 (fr) * | 1990-08-16 | 1992-02-21 | Petroles Cie Techniques | Procede d'ancrage dans le sol d'une structure metallique et base d'ancarge d'une structure metallique ainsi mise en place. |
US5800727A (en) * | 1995-12-07 | 1998-09-01 | Croghan; Morris T. | Base mold for concrete post |
CA2168480A1 (en) * | 1996-01-31 | 1997-08-01 | M. T. Croghan | Concrete post base mold |
EP1074663A1 (de) | 1999-08-06 | 2001-02-07 | Carl Bro as | Fundament für Gebäude, insbesondere Fundament für einen Turm, Windenergieanlage oder dergleichen |
US6672023B2 (en) | 2000-09-27 | 2004-01-06 | Allan P. Henderson | Perimeter weighted foundation for wind turbines and the like |
DK200100030U3 (da) | 2001-01-31 | 2001-03-23 | Peter Thisted | Stjernefundament med elementer til fundering af tårne |
WO2004053238A1 (en) * | 2002-12-11 | 2004-06-24 | Bigfoot Systems Inc. | Footing form |
WO2004101898A2 (de) | 2003-05-13 | 2004-11-25 | Aloys Wobben | Fundament für eine windenergieanlage |
NL1024581C2 (nl) | 2003-10-21 | 2005-04-22 | Gmb Beton En Ind Noord West B | Windmolenfundatie. |
DE102006002780A1 (de) * | 2006-01-20 | 2007-07-26 | Tiefbau-Gmbh "Unterweser" | Verfahren zum Herstellen eines Wasserbauwerks |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019191788A1 (en) * | 2018-03-26 | 2019-10-03 | Viet Hung Nguyen | A foundation of a wind turbine tower |
CN109543287A (zh) * | 2018-11-20 | 2019-03-29 | 深能南京能源控股有限公司 | 基于遗传算法的风电机组基础尺寸优化方法 |
WO2024032921A1 (de) | 2022-08-11 | 2024-02-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Windkraftanlage sowie verfahren zum errichten einer windkraftanlage |
DE102022120299A1 (de) | 2022-08-11 | 2024-02-22 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Windkraftanlage sowie Verfahren zum Errichten einer Windkraftanlage |
Also Published As
Publication number | Publication date |
---|---|
ES2347742A1 (es) | 2010-11-03 |
CN101539096A (zh) | 2009-09-23 |
US20090255200A1 (en) | 2009-10-15 |
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